That is a testament to the effort and resources it takes to bring to market a new display technology, manufacturing processes, device and content and distribution ecosystem. Arguably they should have stayed more tightly focused on the display technology and maybe it's manufacture, and less so on the device and the rest, working with partners for that.

The READIUS device and it's display were a great evolution, and after having held and used one it changed my mind, and I wanted to have one (although with full telephone functionality).

I can only now hope that some other company can pick up the bits or bring a similar technology to production, so that we can have those small devices with large displays.